Finding the Fourth Proportional to 57,960.46, 86,827.88 and 42,735.28

Step by Step Solution

1. Step 1: Write the proportion equation
   57,960.46 : 86,827.88 = 42,735.28 : x
2. Step 2: Convert to fraction form
   57,960.46/86,827.88 = 42,735.28/x
3. Step 3: Cross multiply
   57,960.46x = 86,827.88 × 42,735.28
4. Step 4: Simplify right side
   57,960.46x = 3,710,613,763.61
5. Step 5: Solve for x
   x = 3,710,613,763.61/57,960.46
6. Step 6: Final answer
   x = 64,019.74